<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>for 循环</title>
</head>

<body>
    <script>
        cars = ["BMW", "Volvo", "Saab", "Ford"];
        for (var i = 0; i < cars.length; i++) {
            document.write(cars[i] + "<br>");
        }
    </script>
</body>

</html>